This is the structure that hyperplasia of mammary gland physiology and instauration do not create completely actually disorder disease, reason World Health Organization names his for structure of benign mammary gland undesirable.

• 这实际上是乳腺生理增生与复旧不全所造成的结构紊乱症，故世界卫生组织将其命名为良性乳腺结构不良。